Beaded roofing and lock therefor



W. MAYFIELD.

BEADED ROOFING AND LOCK THEREFOR.

aPPLlcATlon EILED AUG128.19l7.

Patented Mar. 28,1922.

WALKER MAYJEIELD, 01E BOWLING GREEN, KENTUCKY.

BEADED ROOFING- AND LOCK THEREFOR.

To all whom it may concern:

Be it known that I, WALKER MAYFIELD, a citizen of the United States, residing at Bowling Green, in the county of Warren, State of Kentucky, have invented a new and useful Beaded Roofing and Look Therefor; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

The invention relates to metal roofing and seeks to provide, as one of its objects a unique means of locln'ng together the separate sheets of such a roofing.

A further object is to provide means for strengthening the individual sheets comprisin the roofing.

%ther objects will appear in the detailed description which follows.

The invention is set forth in the drawings by specific structure to which, however, it is not to be restricted. The right is reserved to make any changes or alterations compatible with the spirit of the appended claim.

The same numerals of reference designate the same parts in all of the figures of the drawings, wherein Figure 1 is a plan of a section of a metal roofing.

Figure 2 is a section on the line 2-2 of Fi re 1.

igure 3 is a section showing the shape into which the bead may be formed prior to being assembled into the lock.

In the drawings, 1 and 2 designate portions of the adjoining sheets of the improved metal roofing and in each of these sheets is pressed the half round corrugations 3. These corrugations are dia onally disposed with reference to the lengt of the sheets, one set being disposed at one angle andthe other set at the opposite angle. The individual corrugations of one set alternate with and overlap those of the other set.

' At one edge of the sheet 1, a-substantially c lindrical bead 4: is formed tangent with t e sheet, and a ortion 5 projecting beyond the bead. The s eet 2 at one of its edges is provided with a substantially cylindrical bead 6. This bead 6 is of slightly larger radius than the bead 4, and 1s designed, as shown, to arch or completely surround the bead 4, whereby the two sheets of roofing may be connected or assembled. The bead Specification of Letters Patent. Patented B1 28 1922,

Application filed August 28, 1917.

Serial No. 188,685.

4 is provided with a longitudinal V-shaped depression 7 in its crown forming a gutter and also a strengthening means for the beads. It has been found that where two sheet metal galvanized roofing members are joined by a \l-crimp or a standing seam, water through capillary attraction, is drawn between the locked sheets, and is then siphoned over the under crimp, whereby it is allowed to pass out or leak through the opening made by a nail used for fastening the roofing sheets together, and in this way a roof has been found to leak. Consequently applicant has found means to overcome the defect of leakage caused by this capillary attraction of water between the two beads by providing the under bead 4 with said depression 7. This depression receives the water when it is drawn up between the two beads, and passes ofi' longitudinally through the channel or depression, thereby breaking or preventing the siphoning effect of the water down over the other side-of the bead, and hence prevent leakage about the fastening means of the sheet metal roofing plates.

he circular clip 8 is provided for springing over the top of the bead 6 and acts as an additional securing means for holding the two beads together.

The improved roofing comprises a plurality of metal sheets 1 and 2, each sheet being provided on one edge with a bead like bead 4 and on the other edge with a head like bead 6. While sheets 1 and 2 are desi ned to be identical in construction, they ave been given difierent designations to facilitate description.

The roofing is attached to the top of a house or other desired place 15 by means of nails 16 driven through the strip 5, these nails serving to hold one edge of the sheet 1 and the lock between the beads 4 and 6 serving to hold the adjoining edge of the sheet 2. Similarly all the sheets are secured to the house top by nails passing through the strips 5 and by the interlocking of the beads. The clips 8 are designed to be attached to the beads at regular intervals to give added strength to the lock between them and may be soldered thereto or held in place by frictional engagement with the beads.

Instead of being made into a cylindrical shape in the first instance, the beads 4 and 6 may be formed as shown at 17 in Figure 3, this U-shape permitting the sheets to be 7.

easily assembled after which these U-shaped beads may be formed into cylindrical beads with convenient tongs.

The half corrugations formed in the sheets are so shaped and disposed as to prevent flapping and buckling in the center of the sheets and tend to turn the water away from the seams formed by the beads. At the lower ends of-the sheets the corrugations prevent the wind driving the water between the lapping ends and measurably break the force of the wind that enters between the lapping sheets and makes trouble.

The invention having been set forth what is claimed as new and useful4is:

A metallic roofing seam formed by adjacent sheets of material, one of said sheets of material ata point spaced from its marginal inwar 1y extending V-shaped portion car-.

ried by the first mentioned cylindrical bead. In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

WALKER MAYFIELD.

Witnesses:

W. M. KAOENA, CHAS. SIHERA. 

